Nut-lock



UNITED STATES PATENT FICE.

WILLIAM M. IRVINE AND JOHN J. WADDILL, OF MONTGOMERY, ALABAMA.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 277,735, dated May 15,1883.

Application filed April 7,1883. (No modelJ To all whom it may concern Beit known that we, W. M. IRVINE and J. J. WADDILL, of Montgomery, in thecounty of Montgomery and State of Alabama, have invented certain new anduseful Improvements in Nut-Locks; and we do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing bad to the accompanying drawings, and to the letters of referencemarked thereon, which form part of this specification, in which- Figure1 is a transverse sectiontaken through a railroad-rail and fish-plates,showing our improved nut-lock applied. Fig. 2 shows the recess bearingside of the nut.

This invention relates to means for locking nuts on bolts applied torailroad-rails, bridges, and other objects; and it consists in afusiblemetal lock, as will be fully understood from the followingdescription, when taken in connection with the annexed drawings.

A designates a railroad-rail, and B B fishplates fitted into the sidesof the same.

0 is a screw-threaded bolt passed through the rail and fish-plates,havinga nut, B, on it. This not is recessed, as indicated at a, whichrecess may extend entirely or partially around the eye of the nut.

.cess therein.

E designates a pouring-holein one of the fish-plates, arranged so thatwhen the nut is screwed home it communicates with the re- Lead or otherfusible metal can be poured into said recess, so as to form a key, whichwill prevent the out from starting under all ordinary circumstances.

We are aware that, broadly considered, it is not new to hold nuts onbolts by means of fusible metal. Therefore we do not claim such as ourinvention.

Having thus fully described our invention,

what we claim as new, and desire to secure by Letters Patent, is-

The combination of a recessed metal nut and a fish-plate, or itsequivalent, having a pouring hole or channel for the admission offusible metal, all constructed and adapted to operate substantially inthe manner and for the purposes described.

In testimony that we claim the foregoing as our own we affix oursignaturesin presence of two witnesses.

WILLIAM M. IRVINE. JNO. J. WADDILL. Witnesses:

W. H. GARSIDE, S. L. ALEXANDER.

